Translucent polyurethane gradient material node setup
I suspect all colors are the same, but what changes is the transparency and maybe the roughness. That is the data that would be useful to reproduce the material accurately.
In any case, the basic setup n cycles would be a glass shader, where you can control the roughness and a combination of volume absorption, for the color, and volume scatter for translucency.

Hex codes for color are not very useful, as they are meant for sRGB display referred images displayed on a monitor, and blender does not work that way. The same color can look very different depending on the lights and surrounding elements.